OSVERSIONINFOEX dwBuildNumber

Question

Hello experts,

To detect Windows Server 2016 and onward, I use this code, my question is that am I using the correct build numbers to distinguish?

Thanks :)

If OSVERSIONINFOEX.dwMajorVersion = 10 Then
   If OSVERSIONINFOEX.wProductType = VER_NT_WORKSTATION Then
      If OSVERSIONINFOEX.dwBuildNumber >= 21337 Then
         Return "Windows 11"
      Else
         Return "Windows 10"
      End If
   Else
       Select Case OSVERSIONINFOEX.dwBuildNumber
        Case Is <= 14393
         Return "Windows Server 2016"
        Case Is <= 17763
         Return "Windows Server 2019"
        Case Is <= 20348
         Return "Windows Server 2022"
        Case Is <= 26212
         Return "Windows Server 2025"
        Case Else
         Return "Windows Server ????"
       End Select
   End If
End If

Answer 1

Yes, https://learn.microsoft.com/en-us/windows-server/get-started/windows-server-release-info

but there are older versions than 2016 :

https://en.wikipedia.org/wiki/List_of_Microsoft_Windows_versions

Answer 2

Hi @StewartBW ,

Your approach for distinguishing Windows Server versions based on dwBuildNumber is mostly correct.

The latest preview is Windows Server Preview Build 26252 and the Windows Server 2025's build number not yet been announced.

If OSVERSIONINFOEX.dwMajorVersion = 10 Then
    If OSVERSIONINFOEX.wProductType = VER_NT_WORKSTATION Then
        If OSVERSIONINFOEX.dwBuildNumber >= 21337 Then
            Return "Windows 11"
        Else
            Return "Windows 10"
        End If
    Else
        Select Case OSVERSIONINFOEX.dwBuildNumber
            Case <= 14393
                Return "Windows Server 2016"
            Case 14394 To 17763
                Return "Windows Server 2019"
            Case 17764 To 20348
                Return "Windows Server 2022"
            Case Else
                Return "Windows Server (Unknown Version)"
        End Select
    End If
End If

Best Regards.

Jiachen Li

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